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2015 ; 6
(ä): 459
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Macroautophagy in Endogenous Processing of Self- and Pathogen-Derived Antigens
for MHC Class II Presentation
#MMPMID26441964
Duraes FV
; Niven J
; Dubrot J
; Hugues S
; Gannagé M
Front Immunol
2015[]; 6
(ä): 459
PMID26441964
show ga
Although autophagy is a process that has been studied for several years its link
with antigen presentation and T cell immunity has only recently emerged.
Autophagy, which means "self-eating," is important to maintain cell homeostasis
and refers to a collection of mechanisms that delivers intracellular material for
degradation into lysosomes. Among them, macroautophagy pathway has many
implications in different biological processes, including innate and adaptive
immunity. In particular, macroautophagy can provide a substantial source of
intracellular antigens for loading onto MHC class II molecules using the
alternative MHC class II pathway. Through autophagosomes, endogenous
self-antigens as well as antigens derived from intracellular pathogens can be
delivered to MHC class II compartment and presented to CD4(+) T cells. The
pathway will, therefore, impact both peripheral T cell tolerance and the pathogen
specific immune response. This review will describe the contribution of autophagy
to intracellular presentation of endogenous self- or pathogen-derived antigens
via MHC class II and its consequences on CD4(+) T cell responses.